Evidence map›Paper›PMID 30231919›Full record

ArticleParasites & vectors2018

Revisiting the infectivity and pathogenicity of Cryptosporidium avium provides new information on parasitic sites within the host.

Zhaohui Cui, Dan Song, Meng Qi, Sumei Zhang, Rongjun Wang, Fuchun Jian, Changshen Ning, Longxian Zhang

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 23 citations in OpenAlex.

  1. Article
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  3. Prevalence and Molecular Characterization ofPathogens (Basel, Switzerland) · 2025
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  10. International journal for parasitology. Parasites and wildlife · 2020
    Article
  11. First Detection ofMicroorganisms · 2019
    Article
  12. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 1 institution in 1 country.

Zhaohui CuiCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Dan SongCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Meng QiCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Sumei ZhangCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Rongjun WangCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Fuchun JianCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Changshen NingCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China.
Longxian ZhangCollege of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450002, China. zhanglx8999@henau.edu.cn.ORCID http://orcid.org/0000-0002-5706-131X
Henan Provincial Center for Disease Control and Prevention · CN

Funding

Key National Science and Technology Specific Projects 2012ZX10004220-001National Natural Science Foundation of China 31330079National Natural Science Foundation of China U1404327Natural Science Foundation of Henan Province 162300410129
6 · The paper itself

Abstract

backgroundCryptosporidium spp. are protozoans that cause diarrheal illness in humans and animals, including birds, worldwide. The present study was aimed to revisit the infectivity and pathogenicity of C. avium, recently considered to be a valid avian-infecting species of Cryptosporidium, and foster further understanding of its biological characteristics.

resultsResults showed that no Cryptosporidium oocysts were detected in the feces of experimentally inoculated BALB/c mice, Mongolian gerbils, quail or budgerigars within 30 days post-infection (dpi). Oocysts were first detected in feces of 3-day-old and 40-day-old hens at 8 and 9 dpi, respectively. In ducks infected with C. avium, oocysts were first detected at 9 dpi. Oocysts of infected animals were studied using a nested-polymerase chain reaction (PCR) technique for the SSU rRNA gene, actin gene, HSP70 gene and Cryptosporidium oocyst wall protein gene (COWP) detection. Restriction fragment length polymorphism (RFLP), using SspI and VspI restriction enzymes, was carried out to genotype the species and obtained amplification products were sequenced. Cryptosporidium developmental stages were found in the longitudinal plica of the bursa fabricii (BF) of hens, with high levels observed in histological sections and scanning electron microscopy. No pathological changes were observed.

conclusionsThese findings indicate that the bursa fabricii may be the primary site of C. avium infection. More biological data are needed to support the establishment of new species and contribute to the taxonomy of Cryptosporidium.

Indexed as

AnimalsChickensCryptosporidiosisCryptosporidium parvumDiarrheaDisease Models, AnimalDucksFecesFemaleGenotypeGerbillinaeHumansMiceMice, Inbred BALB COocystsPolymerase Chain Reactionoocyst wall protein, CryptosporidiumProtozoan ProteinsBiologyBursa fabriciiCryptosporidium aviumParasitic site

Identifiers

PMID30231919
PMCPMC6146613
OpenAlexW2891363145

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.